For basic 1"-3" air filters, manufacturers usually recommend to change them every 30-60 days. If you suffer from light to moderate allergies, you could upgrade the air filter or change them [even more often|more frequently|every few weeks]3]. Or, if you're in a more remote area or less occupied home (like a vacation home) and there are fewer cars around, annually may be often enough.

Here are some general guidelines to know how often you should change the air filter at home:

Vacation home or single occupant and no pets or allergies: every 6-12 months

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